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Where the Deuce Deuce is My CMMG .22LR PS90 Conversion????

11969 Views 26 Replies 16 Participants Last post by  jhs27275
Just as the title says: Where the deuce deuce is it? 2015 and not a single one has been put out to market by CMMG.

Last word was CMMG was waiting for end sellers to make a large enough order before CMMG actually begins to make these.
That was 3 years ago; I am certain that by now, enough end sellers, probably all of them on-line stores, would have fullfilled CMMG's initial request for a minimum of 1,000 orders.

I can understand if the .22LR ammo scare of that time ruined the popularity of .22LR conversion kits for various firearms, but today, .22LR is making a comeback on the shelves of almost all of my local gunstores with the prices of each brick coming back down to a decent price.

The time is ripe for CMMG to get back on the ball and finally get this product out to the sellers.
I will buy one for the sake of the cheapness of .22LR ammo, the flexibility to switch to a much smaller pea-shooting varmint round, and the simple ability to be able to pull the trigger more often because of the probability that the CMMG high capacity mag will hold a significant amount more of .22LR rounds than even the 50rd 5.7x28 mag.

If there is some technical/design problems, such as perfecting the .22LR mag or making the movement group (bolt assembly) work properly to load .22LR rounds into the 5.7x28mm firing chamber such that the .22LR is pushed all the way into the chamber's neck without a dangerous amount of .22LR brass sticking back such that it is fired with half of its ass still in the larger diameter portion of the chamber, I can understand that.

I would at the very least want CMMG to come forward and say why it is not out yet.
1) Not enough projected sales to make up for the research, development, tooling, and other production costs.
2) Still trying to hash out the technical and design issues.



What it is:
CMMG .22 Evolution for FN P90 / PS90 - The Firearm Blog

vid from 2012 Shot Show, and I cannot find any more recent vids of this CMMG
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I would have to say this is the 22 conversion practice rifle. :mrgreen:
High Tower Armory 90/22 (Black)
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I'd buy the conversion too, if it was available.....but for now it looks like i'm getting a 10/22 to modify!!
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I would have to say this is the 22 conversion practice rifle. :mrgreen:
High Tower Armory 90/22 (Black)
I'd buy the conversion too, if it was available.....but for now it looks like i'm getting a 10/22 to modify!!
Very good point. This product might have killed the plans for CMMG to release the .22LR conversion for the PS90.

The HTA 90/22 kit: $270
Brand new Ruger 10/22 18.5in barrel from local GS (gotta be NFA legal): $260 (as little as $100 used if you are lucky on bidding)

Total costs:
New, NFA legal: $530 before sales tax, S&H, FFL transfer fee
Used, NFA legal: $370 before sales tax, S&H, FFL transfer fee, and any possible gunsmithing charge if requiring repairs

New, SBR tax stamp: $730 before sales tax, S&H, FFL transfer fee, and CLEO fees, etc
Used, SBR tax stamp: $570 before sales tax, S&H, FFL transfer fee, CLEO fees, etc, and any possible gunsmithing charge if requiring repairs


Most ppl would opt for the NFA legal version, and most likely a used 10/22 or they already have one.
So, the fee range is $270 all the way though $730,
but assuming they don't already have a 10/22, I am guessing a $150 cost for a used 10/22 and the total cost of Ruger + HTA kit would be $420.

If CMMG planned to sell their .22LR PS90 conversion kit against this competition, they would have to have estimated an MRSP of under ~$420.
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Just as the title says: Where the deuce deuce is it? 2015 and not a single one has been put out to market by CMMG.
CMMG passed on it a long time ago. Old news.
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Yeah, if they aren't available soon, I am going to have to machine one myself. I'm going broke shooting 5.7 ammo. If CMMG isn't going forward with this then let's all band together and get r' done. Who..Ra. Did they patent this thing, and then sell the patent?
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Yeah, if they aren't available soon, I am going to have to machine one myself. I'm going broke shooting 5.7 ammo. If CMMG isn't going forward with this then let's all band together and get r' done. Who..Ra. Did they patent this thing, and then sell the patent?
They were looking to sell the idea, not manufacture it. Why don't you buy it from them?
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CMMG passed on it a long time ago. Old news.
They were looking to sell the idea, not manufacture it. Why don't you buy it from them?
Old news, but it's new news to me. I never knew that until you mentioned it.
Poking around on a web search, even went to CMMG's website for possible back news, but couldn't find anything on these decisions.

I did however find the actual patent # that CMMG filed under.

Patent US20120005931 - Chamber adaptor incorporated into a modified action assembly for permitting ... - Google Patents


Yeah, if they aren't available soon, I am going to have to machine one myself. I'm going broke shooting 5.7 ammo. If CMMG isn't going forward with this then let's all band together and get r' done. Who..Ra. Did they patent this thing, and then sell the patent?
Hello and welcome!

If you can machine the design and make it as per their patent diagram, and actually produce it for consumption; I would be willing to purchase a kit.
I guess it all depends on how much CMMG would ant to charge for the patent, which of course that cost would have to amortized over the number of kits you could sell.
With the sale of their patent, I'm sure that package would also include the design files for the kit.
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Old news, but it's new news to me.
So apparently you did not do a search on this forum. :biggrin:
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Think I'll just SBR my Ruger Charger for short 22LR plinking.
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They want someone to buy the idea/plans, as they decided not to do it.
Conversion Kit Revisited 2015

Old news, but it's new news to me. I never knew that until you mentioned it.
Poking around on a web search, even went to CMMG's website for possible back news, but couldn't find anything on these decisions.

I did however find the actual patent # that CMMG filed under.

Patent US20120005931 - Chamber adaptor incorporated into a modified action assembly for permitting ... - Google Patents




Hello and welcome!

If you can machine the design and make it as per their patent diagram, and actually produce it for consumption; I would be willing to purchase a kit.
I guess it all depends on how much CMMG would ant to charge for the patent, which of course that cost would have to amortized over the number of kits you could sell.
With the sale of their patent, I'm sure that package would also include the design files for the kit.
Hello There. Good To Be On Board!

Thanks for the welcome, and checking into the patent issue. I'll inquire with CMMG to see if they would allow me to manufacture in exchange for a percentage of each kit sold. I'd be happy just to break even. I love shooting my PS90 [I had it short-barreled to 10.4 in, with a YHM "Can" -Yes, I had to pay for two separate $200.00 Tax Stamps )-: What a rip!], but hate the cost of ammo. Anyway, I'll keep ya'll posted.

Have a good night.
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Hello There. Good To Be On Board!

Thanks for the welcome, and checking into the patent issue. I'll inquire with CMMG to see if they would allow me to manufacture in exchange for a percentage of each kit sold. I'd be happy just to break even. I love shooting my PS90 [I had it short-barreled to 10.4 in, with a YHM "Can" -Yes, I had to pay for two separate $200.00 Tax Stamps )-: What a rip!], but hate the cost of ammo. Anyway, I'll keep ya'll posted.

Have a good night.
Ask for Jeff or John Overstreet.
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Hey everyone: Here's a letter I wrote to CMMG, Inc. Waiting for their reply. Keep your fingers crossed. Who..Ra.




CMMG Mailing Address:
CMMG Inc.

P.O. Box 369

Fayette, MO. 65248

ATTN: Sales/NFA Department/CEO/CFO


Re: Outsource Manufacturing of PS90 Conversion Kit.

Would your company be interested in outsourcing the manufacturing of the PS90 Conversion Kit for a royalty fee per-unit-sold? I am putting together several investors who are interested in funding a limited run of 300 units as a testing platform for this specific, niche market. We are all long-time gun enthusiasts, and owners of PS90/P90’s. We realize that this is a very limited market, and as such, know there isn’t going to be a huge profit margin made here. We are more interested in providing a quality product that is really needed for owners of the PS90/P90. The primary reason would be to save owners a considerable amount of money in ammo costs. We typically shoot several thousand rounds of 5.7 ammo each time we’re at the target range. At almost 50 cents-a-round, the cost really begins to add up. We want to be able to give PS90/P90 owners the option of purchasing, and using this valuable product.


Thank you in advance for taking the time to consider this proposal. We are open to any suggestions you may have.

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Hey everyone: Here's a letter I wrote to CMMG, Inc. Waiting for their reply. Keep your fingers crossed. Who..Ra.




CMMG Mailing Address:
CMMG Inc.
P.O. Box 369
Fayette, MO. 65248

ATTN: Sales/NFA Department/CEO/CFO


Re: Outsource Manufacturing of PS90 Conversion Kit.

Would your company be interested in outsourcing the manufacturing of the PS90 Conversion Kit for a royalty fee per-unit-sold? I am putting together several investors who are interested in funding a limited run of 300 units as a testing platform for this specific, niche market. We are all long-time gun enthusiasts, and owners of PS90/P90’s. We realize that this is a very limited market, and as such, know there isn’t going to be a huge profit margin made here. We are more interested in providing a quality product that is really needed for owners of the PS90/P90. The primary reason would be to save owners a considerable amount of money in ammo costs. We typically shoot several thousand rounds of 5.7 ammo each time we’re at the target range. At almost 50 cents-a-round, the cost really begins to add up. We want to be able to give PS90/P90 owners the option of purchasing, and using this valuable product.


Thank you in advance for taking the time to consider this proposal. We are open to any suggestions you may have.
Awesome! Since they have been sitting on these dormant patents for several year now, I do hope your approaches will poke their interest in your offer.

I'm marking this thread as a favorite in my browser to follow how it all develops.
It would be really cool if they move forward on this. Good luck with your endeavor.
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Perhaps if you and your investors order 300 units from them and they know that they can sell that many (obviously for resale) they will make them. Depending on the price, I'd likely be interested in two of the 300.
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I'd also be interested in a couple if this were to move forward.
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Including myself, that is already 5 of us who would order one! :<>:
Make it 6...i'll take one...
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